He was really clutch down the stretch. Was interesting to see him playing almost the whole stretch run. Showcasing him for a trade?

That's possible - but I think there is a good chance it is simply a function of Mike playing well lately, shaking off the rust from the serious ankle injury that caused him to miss two full months. Remember that he was playing 20-25 minutes each game before he got hurt.

Since Mike returned, here are his stats per 40 minutes (a full game for a top starter):

The Hawks could potentially be interested in trading Mike. He can opt-out of his $5 million contract for next year. He may do that with the goal of getting a longer term deal somewhere else. If the Hawks aren't interested in giving Mike an extension (which may be the case because they didn't do it last year), why not trade him now to get something in return?

I doubt Mike will opt out since the NBA in general is facing financial stagnation. The cap for next year is barely going to rise, and teams have already committed money based on a much higher estimate of what the cap would be. It turned into a buyers' market this past summer - which is why MM got a lot less than equivalent players got the year before. This year will be worse for mid-tier players. Fwiw, there are seven NBA teams with any real space under the salary cap.